( ) you understand the rules, you will have no further difficulty in applying them.

( ) you understand the rules, you will have no further difficulty in applying them.


A、

While 


B、

Once


C、

Whether 


D、

Unless


【正确答案】:B
【题目解析】:

本题考查连词辨析。while:尽管;unless:除非;whether:不论;once:一旦,只要。根据句意:( )你理解了这些规则,你在应用它们时就不会再有困难了。根据语境判断,只要(一旦)……就……最适合。故选B。

句意:一旦你理解了这些规则,你在应用它们时就不会再有困难了。


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